package com.xhx.config;

import java.util.concurrent.ThreadPoolExecutor;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

/**
 * 线程池配置
 */
@Configuration
public class ThreadPoolConfig {

	/**
	 * 通用处理线程池
	 * 
	 * @return
	 */
	@Bean
	ThreadPoolTaskExecutor commonTaskExecutor() {
		ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
		// 配置核心线程数
		executor.setCorePoolSize(2);
		// 配置最大线程数
		executor.setMaxPoolSize(3);
		// 配置队列大小
		executor.setQueueCapacity(100);
		// 线程所允许的空闲时间
		executor.setKeepAliveSeconds(120);
		// 配置线程池中的线程的名称前缀
		executor.setThreadNamePrefix("taskExecutor-");
		// rejection-policy：当pool已经达到max size的时候，如何处理新任务
		// CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行
		executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
		// 执行初始化
		executor.initialize();
		return executor;
	}

}
